X87: Unify the stack layout for construct frames.

src/x87/frames-x87.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_X87_FRAMES_X87_H_
 #define V8_X87_FRAMES_X87_H_
 
 namespace v8 {
 namespace internal {
 
@@ skipping 75 matching lines @@
 
   static const int kFrameSize =
       StandardFrameConstants::kFixedFrameSize + kPointerSize;
 };
 
 
 class ConstructFrameConstants : public AllStatic {
  public:
   // FP-relative.
   static const int kImplicitReceiverOffset = -5 * kPointerSize;
-  static const int kConstructorOffset      = kMinInt;
   static const int kLengthOffset           = -4 * kPointerSize;
   static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset;
 
   static const int kFrameSize =
       StandardFrameConstants::kFixedFrameSize + 3 * kPointerSize;
 };
 
 
 class InternalFrameConstants : public AllStatic {
  public:
   // FP-relative.
   static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset;
 };
 
 
 inline Object* JavaScriptFrame::function_slot_object() const {
   const int offset = JavaScriptFrameConstants::kFunctionOffset;
   return Memory::Object_at(fp() + offset);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X87_FRAMES_X87_H_